chars = [ 'a', 'b', 'c', 'd', 'e' ];

SCR.innerHTML="";
for (var i=0;i<200;i++)    {
    SCR.innerHTML+="<span>"+chars[i%5]+"</span>";
}

var alpha = 0;
LAYER1.addTo("anim1", function()    {
    alpha+=PI/860;
    $$('span').forEach( function(e,i)    {
        var x = sin(alpha*i/2)*(200-i)+200;
        var y = cos(alpha*i/2)*(200-i)+200;
        e.setTransform({ dx: x, dy: y});
    });
});